China Industrial Sludge Dewatering Centrifuge Manufacturers Suppliers Factory - Quotation

Industrial Sludge Dewatering Centrifuge

The Industrial Sludge Dewatering Centrifuge (Decanter Centrifuge) is a continuous solid-liquid separation machine driven by high centrifugal force. It separates suspended solids from municipal and industrial sludge via continuous sedimentation at high rotational speeds.

Built for heavy-duty 24/7 operating environments, this unit features a heavy-walled stainless steel bowl, a robust differential gearbox, and wear-protected conveyor flights. It delivers continuous sludge thickening and dewatering without filter cloth blinding, cutting cake disposal volume by up to 70% compared to traditional belt presses.

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Key Features

Continuous Dual-Motor Drive: Independent bowl and scroll speed regulation compensates for sudden sludge consistency changes and maintains stable torque output.

Tungsten Carbide Protection: Scroll flights are armored with sintered tungsten carbide tiles to resist abrasive grit in industrial and municipal sludge.

Corrosion-Resistant Metallurgy: Rotating assemblies fabricated from centrifugal-cast 2205 duplex stainless steel or AISI 316L to withstand corrosive chemical dosing.

Precision Planetary Gearbox: High torque capacity gearbox ensures reliable differential speed control under heavy solids loading.

Vibration Isolation Base: Heavy structural steel skid mounted with heavy-duty elastomeric isolators to dampen operational vibration.

Technical Specifications

Model	Bowl Diameter (mm)	Max Bowl Speed (RPM)	Max G-Force	Processing Capacity (m³/h)	Main Motor Power (kW)	Dimensions (L × W × H, mm)
LW-450	450	3200	2580	10–25	30–37	3200 × 1400 × 1350
LW-550	550	2800	2410	20–45	45–55	3800 × 1650 × 1500
LW-650	650	2400	2100	40–75	75–90	4500 × 1900 × 1750
LW-750	750	2000	1680	70–120	110–132	5200 × 2100 × 1950

Separation Performance

Solid Recovery Rate	≥ 95% (with optimal polymer dosing).
Cake Dryness (DS %)	Municipal Sludge: 20%–30% Chemical Sludge: 25%–40%
Centrate Quality	Suspended solids in filtrate < 300 mg/L, suitable for direct discharge or secondary membrane filtration.

Suitable Materials & Applications

Target Sludge Types

Municipal Wastewater: Primary and secondary biological excess sludge.
Petrochemical & Refinery: DAF floatation sludge, oily sludge, and biological waste.
Pulp & Paper: Primary clarification sludge and deinked waste sludge.
Mining & Metallurgy: Metal hydroxide sludge, tailing slurries, and washing wastewater.

Material Compatibility

Bowl & Scroll Body: SS304, SS316L, or Duplex Stainless Steel 2205.
Casing & Skid: Carbon steel with heavy-duty anti-corrosion epoxy marine coating (or SS304 cladding).
Gaskets & Seals: FKM (Viton) or NBR resistant to industrial oils and polymers.

Textile Wastewater Sludge Dewatering Machine

Equipment Configuration

01/

Drive System: ABB/Siemens IE3 energy-efficient motors with VFD (Variable Frequency Drive) control for back-drive and main drive.

02/

Electrical Control Panel: PLC-based automation (Siemens/Schneider) with HMI touchscreen, real-time torque monitoring, bearing temperature sensors, and vibration transmitters.

03/

Feed Pump System: Progressive cavity feed pump with flow meter linkage.

04/

Polymer Dosing Unit: Automatic dry/liquid polymer preparation and dosing skids.

Customization Options

Food Processing Sludge Separation Equipment

Explosion-Proof Configuration

ATEX / IECEx certified motors and instruments for petrochemical or explosive gas environments.

Inert Gas Blanketing

Nitrogen purging ports for closed-loop processing of volatile organic compounds (VOCs) in oily sludge.

Wear Upgrade Packages

Full ceramic tile lining on the inner bowl wall for highly abrasive inorganic mineral slurries.

Skid-Mounted Modular System

Pre-piped and pre-wired complete dewatering unit including centrifuge, pumps, and control panel on a single structural steel skid.

Quality Control & Manufacturing Capability

Our manufacturing facility maintains strict dimensional and metallurgical control to guarantee mechanical integrity under high centrifugal stress:

Dynamic Balancing: Every welded bowl and scroll assembly undergoes high-speed dynamic balancing (ISO 1940 Grade G2.5 or higher) prior to assembly to eliminate operational vibration.

Material Traceability: Mill test certificates (MTC, EN 10204 3.1) provided for all pressure-bearing and rotating components (Forged shafts, stainless steel plates).

Non-Destructive Testing (NDT): Weld seams on the rotating bowl shell undergo 100% Ultrasonic Testing (UT) or Magnetic Particle Testing (MT).

Factory Acceptance Testing (FAT): 4-hour full-speed no-load running test recording bearing temperature, noise level, and vibration spectrum.

Installation & After-Sales Support

Documentation Package

Complete English manuals including P&ID, electrical schematics, PLC source code, maintenance guidelines, and FAT reports.

Commissioning Support

On-site or remote engineering guidance for mechanical alignment, vibration calibration, and polymer dosing optimization.

Spare Parts Availability

Critical components (bearings, seals, gearboxes, tungsten tiles) stocked locally or dispatched within 48 hours to minimize plant downtime.

FAQ

Q: How do feed consistency fluctuations affect decanter centrifuge performance?

A: The integrated PLC automatically adjusts the differential speed of the scroll via the VFD back-drive when torque changes, preventing cake plugging and ensuring constant cake dryness.

Q: What is the expected lifespan of the tungsten carbide wear protection?

A: Under normal municipal sludge operation, the tungsten carbide tiles on the scroll flights last 15,000 to 25,000 operating hours before refurbishment is required.

Q: Can this centrifuge operate without polymer (flocculant) addition?

A: While it can separate certain heavy particles without polymer, polymer conditioning is strongly recommended for municipal and biological sludge to achieve acceptable solid recovery rates (≥ 95%) and cake dryness.

Q: What utilities are required on-site for operation?

A: 3-phase industrial power (e.g., 380V/415V/480V, 50/60Hz), plant service water or flush water for Clean-In-Place (CIP), and compressed air (if pneumatic valves are selected).

Q: What is the standard delivery lead time for a custom unit?

A: Standard production lead time ranges from 8 to 12 weeks, depending on motor specifications, explosion-proof requirements, and chosen metallurgy.

Q: How is bearing failure prevented during continuous operation?

A: The machine uses high-precision SKF/FAG heavy-duty bearings combined with an automated grease/oil lubrication system and real-time temperature monitoring to trigger alarms if thermal thresholds are exceeded.

Request a Quote (RFQ) & Resources

To receive a precise technical proposal and commercial quotation for your project, please provide the following parameters, or download our technical datasheet for internal engineering review:
Sludge Type & Source: (E.g., Municipal secondary sludge, chemical effluent)
Design Processing Capacity: (m³/h or kgDS/h)
Feed Solid Concentration: (g/L or % DS)
Target Cake Dryness: (% DS required)
Electrical Standard: (Voltage / Frequency / Explosion-proof rating)

As one of the most professional industrial sludge dewatering centrifuge manufacturers and suppliers in China, we have world-leading production equipment and strong manufacturing capabilities. Please feel free to buy customized industrial sludge dewatering centrifuge from our factory. Also, quotation is available.